g-rove



(No Model.) 2 Sheets-Sheet 1.

D. GROVE.

- WATER HEATER-.18

No. 384,202. 4 I PatentedJuneB, 1888.

m PETEl MwLi\lwgnphun Washington. a c

(No Model.) 2 Sheets-Sheet 2.

. D. GROVE.

WATER HEATER.

Patented June 5, 1888.

IE E 7 UNITED STATES PATENT OFFICE.

DAVID GROVE, OF BERLIN, GERMANY.

WATER-HEATER.

SPECIFICATTQN forming part of Letters Patent No. 384,202, dated June 5, l88.

Application filed November 16, 1855. Serial No. 182,969. (No model.) Patented in Germany April 18, 1882, No. 20,730, and in England January 4, 1883, No. 61.

To ctZZ whom it may concern:

Be it known that 1, DAVID GROVE, of the city of Berlin, in the Kingdom of Prussia, and

German Empire, have invented certain new and useful lmprovcments in ater-Heaters, (which have been partly patentedto me in Germany under N0.20,730, dated April 18, 1882, and in England under N0. 61, dated January 4, 1883,) of which the following is a speeifica tion.

My invention relates to improvements in apparatus for heating dwellings, hotels, and other establishments by the use of warm water, the water-coils being located within a heatingchamber, the heating medium employed being regenerative gas and heated air for the combustion of the same.

The object of the invention is to heat the water-coils by the use of gas, and to heat the air necessary for combustion before it reaches the burner.

Figure 1 represents the longitudinal section of the heatingehamber in a water-heating arrangement in which regenerative gas is employed. Fig. 2 is across-section of Fig. 1; Fig. 3, a cross-section on the lines A B and G D in Fig. 1. Fig. 4 is the longitudinal section of a modification of the hot-water heating arrangement. Fig. 5 is a cross-section, and Fig. 6 a part section, of Fig. 4 on the lineE F.

The gases, produced from any suitable generator, pass through the connectingpipe r to the canal or flue r, said canal or flue being in communication with a'suitable tar-pity. From this canal or flue r the gases pass to a second canal or flue, r*, and from here they pass through an elongated opening, forming the burner 12.

The burner is formed at the top of the canal r by checks or jaws b, which project out into the canal and form the elongated and contracted burner-opening. These jaws are made of fire-proof clay or other suitable material, and the opening between them may be increased or diminished by the adjustment of one of the jaws. The gas passes up through the elongated opening into the combustion chamber, and as it issues from the said openingitis intimately mixed with heated air,which passes from the openings 0' directly above the burner-opening, the said openings 2' communicatingwith the hot-air ducts arranged within or alongside of the walls forming the canals r As shown in Fig. 1, these air-ducts are a succession of tubes or passages, (indicated at one side at o to o and upon the other side at uto u,) and as they are connected at their ends they form a sinuous passage upon each side. As shown in Fig.3,a suitable inlet for the outer air is provided, and this inlet is closed with a Valve, which may regulate the amount of air admitted. The air is admitted at the bottom, and successively passes through each passage, being thoroughly heated, and is discharged at the point of combustion, as described. The water-coils are arranged, as shown, upon either side of the canal r within the combustionehamber, and these pipes are in connection with a water-reservoir and with anexit for the hot water leading to the rooms to be heated. The passage leading to the chimney is in the bottom part of the heating-chamber, (indicated at s to 8 so that the products of combustion must pass between the coils in order to escape up the chimney. These pipes are shown at 8.

Figs. 4 to 6 represent a modification of the heating-chambers for a warmwater heating arrangement, as shown in Figs. 1 to 3.

The regulating device, as representedin Figs. 4 to 6, contains two fixed checks or jaws, b, which have their bearings in the walls of the gascanals W.

A rod, 20, which has its bearings win the front and rear walls of the generator, is moved up in order to close the opening or slot formed between the two checks or jawsof the burner and down to allow free passage of the gas through the same. The vertical movement of this rod 10, which runs beneath the entire length of the slot formed by the two cheeks of the burner, is effected by a shaft or axle, 10, which can be operated from the outside of the apparatus, and is provided with two or more cams or tappets, 10 which operate so as to raise the rod or shaft toward the slot of the burner, and thus reduce the area of the way through which the gas passes.

I do not claim in this application an adj ustable-burner, as I have shown, described, and claimed this in another pending application, Serial No. 186,383.

I claim- 1. In a heating apparatus, a heating-chamber, water-coils located within said chamber, a gas-flue leading from a suitable generator to a canal within said heater, a burner provided at the upper part of said canal, and an air-duct opening above said burner for supplying air for the combustion of the gases, with an exit or chimney for the products of combustion, substantially as described.

2. In a heating apparatus, a heating-chamber, coils for containing the water to be heated arranged within said chamber, a canal or duct within said chamber in connection with a suitable gas generator or reservoir,a burner at the termination of said can al,air-passages arranged Within said heating-chamber, and openings from said air-passages into the chamber above the burner, with an exit to the chimney for the products of combustion, substantially as described.

3. In a heating apparatus, a hcating-chamber,water-coi1sin said chamber,and agascanal in the center of said chamber, terminating in a burner and in connection with a suitable gas reservoir or generator, with air-passages arranged between said canal and the water-coils, said passages being in connection with each other, with an inlet-opening to the bottom one,

and with an outlet from the upper one above the burner, with an exit or chimney for the products of combustion, substantially as described.

4. The combination of the gas-chambers T the canals or flues r r, and the burner b with the coils s and canals or fiues s s s s, substantially as described and shown.

5. In a heating apparatus, a heating-chamber, water-coils arranged therein, a canal or duct for the gas or other heating medium, said canal terminating in a burner, and a valve arranged within said canalin proximity to the burner, with devices for regulating the same, substantially as described.

6. The combination of the rod or shaft 10' '7 my name in the presence of two subscribing witnesses.

DAVID GROVE.

\Vitnesses:

B. ROI, M. W. MOORE. 

